Communication over generator bus

A generator system includes at least one generator, at least one generator controller, and a power bus. The power bus transmits power to a load circuit. Data communications are also transmitted by the power bus. In one example, multiple generator controllers exchange messages over the power bus. In another example, one or more generator controllers exchange messages with a central controller over the power bus. The messages may include a status for the generators, output values for the generators, or commands for the generators.